/*
 * Copyright 2011 Overstock.com and others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.googlecode.bindagetools.converters {

/**
 * Returns a converter function which converts a <code>String</code> to a <code>Number</code>.
 * Empty or whitespace-only strings are converted to null.
 */
public function toNumber():Function {
  return function( value:String ):* {
    return (value == null || value.match(/^\s*$/))
        ? null
        : Number(value);
  }
}

}
